An apparatus for maintaining the temperature of an article at a temperature that is below the ambient air temperature includes an enclosure having an outer wall that defines an interior chamber for holding a volume of sealed air. An insert is disposed inside of the chamber and has a body that is made of a porous graphite foam material. A vacuum pump penetrates the outer wall and fluidly connects the sealed air in the interior chamber with the ambient air outside of the enclosure. The temperatures of the insert and article is maintained at temperatures that are below the ambient air temperature when a volume of a liquid is wicked into the pores of the porous insert and the vacuum pump is activated to reduce the pressure of a volume of sealed air within the interior chamber to a pressure that is below the vapor pressure of the liquid.

A welded plate type air to liquid heat exchanger has a plurality of plates each with an internal volume inside a peripheral flange having a flange thickness. The plates are in parallel fluid communication with an inlet and outlet, and are mounted in a frame with a mutual predetermined distance, such that air flows therebetween. The plates are mounted between two plate holding frame members on opposite sides of the plates. The frame members have an exterior edge and slits in a comb-like shape extending from the exterior edge. First type and second type slits are provided in an alternating configuration. The first type are formed with a narrow entry passage section having a width corresponding to the flange thickness and a widened opening section therebehind. The first type receive the peripheral flanges of the plates in the narrow passage section. The second type are substantially straight and vacant.

A heat exchanger includes a housing with an inlet port, an outlet port, an interior facing surface defining a coolant channel, a first opening surrounded by an exterior facing surface, and a second opening defined by a first inner diameter. A tube assembly defines a plurality of exhaust gas flow channels and a plurality of coolant cross channels within the housing. A first diffuser directs a first fluid into the tube assembly and is joined to a first header plate, which separates the first fluid from a second fluid within the coolant channel. A second diffuser directs the first fluid out of the tube assembly. The second diffuser is located within the second opening and sealed to the second opening by seals around the second diffuser.

A heat exchanger includes a header and an annular core fluidly connected to the header. The annular core includes an inner diameter, an outer diameter, first flow channels arranged in a first set of layers, and second flow channels arranged in a second set of layers and interleaved with the first flow channels. Each of the first flow channels includes a first inlet, a first outlet, and a first axial region extending between the first inlet and the first outlet. Each of the second flow channels includes a second inlet, a second outlet, and a second axial region extending between the second inlet and the second outlet.

A method for forming a hybrid heat exchanger is provided. The method includes laser-texturing a metal surface to create a plurality of microstructures and subsequently melt-bonding a plastic component to the plurality of microstructures. During melt-bonding, plastic material penetrates the plurality of microstructures and conforms to the plastic component to the metal surface. After hardening inside the microstructures, the plastic component adheres to the metal surface as a hybrid component. As a result, a fastener or snap connection is not required, and the plastic-metal joint provides a barrier to water, glycol-based fluids, air, and other fluids.

The invention relates to a heat exchanger comprising first fluid inlets, first fluid outlets, second fluid inlets and second fluid outlets. Each of the first fluid inlets, the first fluid outlets, the second fluid inlets and the second fluid outlets are arranged on four different sides of a heat exchanger core. A manifold covers one of the four different sides of the heat exchanger core, wherein a first sidewall of the manifold is arranged at an angle smaller than 90 degree to the one side of the heat exchanger core which is covered by the manifold. An edge of the heat exchanger core between the one side of the heat exchanger core which is covered by the manifold and a neighbouring side of the four different sides of the heat exchanger core forms a common weld line with a connecting edge of the first sidewall of the manifold. The invention also relates to a method for manufacturing a heat exchanger comprising a heat exchanger core and a manifold.

The present invention includes a holding stay made of a heat conductive material that is the same as that of an isolator holder, the holding stay being in contact with a radiation stay made of a member having good thermal conductivity, the radiation stay being in contact with radiation fins extracted from the inside of the isolator holder through an external opening for extraction, columnar welded portions bond the holding stay and the isolator holder through openings for welding, the welded portions apply tensile force toward the isolator holder to the radiation stay via the holding stay, and the radiation stay presses the radiation fins by means of the above-described tensile force to be fixed to the isolator holder.

A manifold with a circular cross-section having a deviation angle of 180 degrees for a tube bundle heat exchanger for large product pressures has a first and second flange on each inlet and outlet. The manifold has two manifold halves respectively made of a single piece, and each half comprises a joining point on an end facing away from a flange. The manifold halves are connected together on the associated joining point. Extension of the passage cross-section of each manifold half is formed by rotationally symmetrical through openings, from which at least one of the flanges and at least one of the joining points extends in the respective coaxial arrangement on rotational axes. First and second axes of through openings of the first manifold halves and third and fourth axes of through openings of the second manifold halves extend on a common plane representing a meridian plane for each flange.

Two or more cores (2a, 2b) in each of which two more types of passage layers through which two or more fluids flow are layered alternately are welded together. The entire bottom portions of the cores (2a, 2b) are covered with a lower header tank (3), thereby making the fluids flow into the cores (2a, 2b). A dummy layer (14) through which none of the fluids flow is provided beside a weld side face of each core (2a, 2b). A weld spacer (18) is welded to the entire peripheral edge of a side plate (16) of the dummy layer (14). A through-hole (16a) for draining water in the dummy layer (14) is made near the lower end of the side plate of the dummy layer (14). Further, a liquid drain hole (20) through which water is drained is made at a lower corner of the weld spacer (18).

A liquid-cooling heat dissipation apparatus includes a water distribution box, a water collection box, a first radiating pipe, a second radiating pipe, a third radiating pipe, a fourth radiating pipe, and a pumping device. The channels in the liquid-cooling heat dissipation apparatus are connected in sequence to form a circuitous configuration. This allows the water to travel a longer distance in the liquid-cooling heat dissipation apparatus, so that the liquid-cooling heat dissipation apparatus can effectively cool the water and dissipate heat.